CN107103977B

CN107103977B - A kind of power transformer

Info

Publication number: CN107103977B
Application number: CN201710468504.XA
Authority: CN
Inventors: 叶孟淼
Original assignee: ZHEJIANG DELIXI ELECTRICAL Co Ltd
Current assignee: ZHEJIANG DELIXI ELECTRICAL Co Ltd
Priority date: 2017-06-20
Filing date: 2017-06-20
Publication date: 2019-08-13
Anticipated expiration: 2037-06-20
Also published as: CN107103977A

Abstract

The invention discloses a kind of power transformers, including shell；Detection module, in the chamber of shell, with automatic identification input voltage and the converting unit of voltage conversion instruction can be issued, and judge that input voltage over-voltage carries out the judgement alarm unit of high frequency flicker alarm or under-voltage progress low frequency flicker alarm according to output voltage；Transformer body is connect in the chamber of shell and with detection module electrical property or signal, for executing the conversion instruction of converting unit sending to realize the conversion of voltage；Above-mentioned power transformer identifies and judges input voltage by the detection module connecting with transformer body, realize power transformer high voltage and low-voltage it is mutual automated intelligent conversion, thus electric appliance general can be made in domestic and international voltage standard；Also, detection module carries out high frequency flicker alarm or under-voltage progress low frequency flicker alarm in input voltage over-voltage, enable users to timely to find above-mentioned power transformer input voltage whether be power transformer standard nominal input voltage.

Description

A kind of power transformer

Technical field

The present invention relates to transformer technology fields, and in particular to a kind of power transformer.

Background technique

In recent years, with the rise of the buying patterns such as Hai Tao, tourist shopping, more and more foreign countries' electric appliances enter the country, But the voltage overwhelming majority for the electric appliance that foreign countries buy does not meet China's voltage standard, or is travelling abroad or going on business When, there may be differences for the voltage and external voltage of portable country's electric appliance, if foreign electric appliance is directly connected me Domestic electric appliance is connected external power supply and may result in electric appliance and can not work normally or even burn out by the power supply of state.

For this purpose, the prior art such as Chinese patent literature CN205230786U discloses a kind of electricity with short-circuit protection function Source transformer comprising shell, be set in the housing portion and toroidal transformer with input terminal lead and output end lead, with it is defeated The plug for entering to hold lead electrical connection, the socket being electrically connected with output end lead, control switch.

However, the prior art not can solve still in actual use domestic and international electric appliance due to voltage standard difference without The general problem of energy, the reason is that, realization high voltage-low-voltage conversion that the toroidal transformer of the prior art can only be single Or the conversion of low-voltage-high voltage, and home and abroad environment is compared, most external voltage standards and domestic voltage mark It is quasi- different, it is high or low, if improper use during artificial selection uses power transformer, can play and run counter to desire Effect.

Summary of the invention

Therefore, the purpose of the present invention is to provide one kind, and electric appliance general can be made in the power supply transformation of domestic and international voltage standard Device.

A kind of power transformer, including

Shell；

Detection module, in the chamber of the shell, have can automatic identification input voltage and issue voltage conversion refer to The converting unit of order, and judge that input voltage over-voltage carries out high frequency flicker alarm or under-voltage progress low frequency sudden strain of a muscle according to output voltage The judgement alarm unit of bright alarm；

Transformer body is connect, for holding in the chamber of the shell and with the detection module electrical property or signal The conversion instruction that the row converting unit issues is to be converted to rated output voltage for the input voltage.

Preferably, the detection module is the circuit board that the transformer body side is arranged in.

Preferably, the shell includes the pedestal and upper housing being detachably connected, and the upper housing is connect with the pedestal The chamber is formed, the transformer body and the detection module are arranged in the cavity bottom；The pedestal is equipped with and institute State transformer body and corresponding first heat release hole of the detection module.

Preferably, further include the plug assembly for appliance plug grafting set on the chamber, the upper housing it is remote End face from the pedestal is the fitting surface for forming installation opening, and the plug assembly is connected to described by the first clamping structure At installation opening.

It preferably, further include being set between the transformer body and the plug assembly for being connected the positioning transformation The outer rim of the fixed plate of device ontology and the plug assembly, the fixed plate is connected in the chamber by the second clamping structure Wall.

Preferably, the fixed plate is polygonized structure, shape between the polygonized structure and the inner wall of the upper housing At the heat transfer for generating the transformer body to the heat dissipation channel on the chamber top.

Preferably, the pedestal is circle, and the upper housing is the conical structure that bottom opening is adapted to the pedestal.

Preferably, second clamping structure includes several barbs for being symmetrically disposed on the upper enclosure inner wall, and molding With respect to both sides and the raised line of the groove being caught in suitable for the barb is provided in the fixed plate.

Preferably, the transformer body is connect by first fixed structure with the pedestal, the first fixed structure Periphery setting including taking shape on the pedestal, along the transformer body lower end is for preventing the transformer body from shaking First protrusion, and take shape in the fixed plate towards the transformer body upper end side, with first male cooperation Further fix the second protrusion of the transformer body.

Preferably, indicator light is provided on the upper housing, the indicator light is connected to the circuit board, can be according to defeated The height of voltage shows red light perhaps blue lamp carries out the flashing of low frequency or high frequency according to the under-voltage or over-voltage of input voltage out Alarm.

Preferably, first clamping structure include take shape in the fitting surface and the plug assembly junction and Several protrusions being oppositely arranged, and the position of the relatively described protrusion of the plug assembly is taken shape in, it is provided with suitable for the protrusion The slot being caught in.

Preferably, the power transformer further includes the shell being set on the outside of the fitting surface by the second fixed structure Lid, the cap form and are aligned setting with the installation opening, are connected to the plug assembly for the electricity for plug insertion Five hole jacks of electric appliance described in the voltage output after the conversion of source transformer.

Preferably, the fitting surface forms several second heat release holes, the cap towards the side of the fitting surface at Type has the bulge loop being bonded in the cap and upper housing connection with the fitting surface, forms and described second on the bulge loop Heat release hole cooperation by the heat transfer in the power transformer to outside, connect with the fitting surface and to form the third of hole and dissipate Hot hole.

Preferably, it is provided between the fitting surface and the cap for preventing children from passing through five hole jack contact To the protective door of the plug assembly.

Preferably, the junction of the pedestal and the upper housing is provided with the Outlet line for accessing supply voltage.

Technical solution of the present invention has the advantages that

1. power transformer provided by the invention, including shell；Detection module, in the chamber of shell, having can be certainly Dynamic identification input voltage and the converting unit for issuing voltage conversion instruction, and judge that input voltage is crossed according to output voltage and be pressed into The alarm of row high frequency flicker or the under-voltage judgement alarm unit for carrying out low frequency flicker alarm；Transformer body, set on the chamber of shell It is interior and connect with detection module electrical property or signal, for executing the conversion instruction of converting unit sending to convert input voltage into Rated output voltage；Above-mentioned power transformer carries out input voltage by the detection module connecting with transformer body automatic It identifies and judges, conversion instruction is issued when recognizing input voltage and being high voltage makes transformer body carry out the low electricity of high voltage- The conversion of pressure, issuing conversion instruction when recognizing input voltage and being low-voltage makes transformer body carry out low-voltage-high voltage Conversion, i.e., by power transformer to input voltage can be carried out high voltage or low-voltage it is mutual automated intelligent identification and Conversion, can be achieved with electric appliance general in domestic and international voltage standard, without using the power supply transformation of two different switching functions in this way Device；Also, detection module can be judged according to the output voltage of power transformer input voltage whether over-voltage or under-voltage, if over-voltage High frequency flicker alarm is then issued, low frequency flicker alarm is issued if under-voltage, such user can be intuitive outside power transformer Acquisition power transformer work state information, and can timely find above-mentioned power transformer input voltage whether be electricity The nominal input voltage or transformer body failure of source transformer standard.

2. power transformer provided by the invention, shell includes the pedestal and upper housing being detachably connected, upper housing and bottom Seat connection forms chamber, and transformer body and detection module are arranged in cavity bottom；Upper housing bottom is equipped with and transformer body The first heat release hole corresponding with detection module；Shell is arranged to dismountable pedestal and upper housing, convenient for in chamber zero Component is installed, and is connected pedestal with upper housing after being installed, rapid and convenient；Above-mentioned first heat release hole be in order to It radiates to transformer body and detection module, prevents overheat in power transformer.

3. power transformer provided by the invention further includes the plug assembly for appliance plug grafting set on chamber, The end face of the separate pedestal of upper housing is the fitting surface for forming installation opening, and plug assembly is connected to dress by the first clamping structure At mouth；Above-mentioned plug assembly is connected at installation opening by the first clamping structure, can make operator will be easily from upper casing Plug assembly is connected at the installation opening of fitting surface by the opening that body is connect with pedestal.

4. power transformer provided by the invention further includes being set between transformer body and plug assembly for being connected fixed The fixed plate of position transformer body and plug assembly, the outer rim of fixed plate are connected in chamber inner wall by the second clamping structure；On It states fixed plate and chamber inner wall is connected in by the second clamping structure, this structure is connect from upper housing with pedestal convenient for operator Opening fixed plate is packed into the inner wall of upper housing, and can be securely attached on inner wall.

5. power transformer provided by the invention, transformer body is connect by first fixed structure with pedestal, and first is solid Determining structure includes taking shape on pedestal, first for preventing transformer body shaking being arranged along the periphery of transformer body lower end Protrusion, and take shape in fixed plate and further fix transformer sheet towards the side of transformer body upper end, with the first male cooperation Second protrusion of body；Above-mentioned transformer body is by being located at the first protrusion of transformer body lower end and being located on transformer body Second protrusion at end is firmly fixed in chamber, will not be shaken power transformer receives shock.

6. power transformer provided by the invention, power transformer further includes being set to fitting surface by the second fixed structure The cap in outside, cap form and are aligned setting with installation opening, are connected to plug assembly for power transformer for plug insertion Five hole jacks of the voltage output electric appliance after conversion；Above-mentioned cap is set to the outside of fitting surface, can be effectively protected and cover The plug assembly being connected at installation opening is prevented from getting an electric shock or be leaked electricity.

7. power transformer provided by the invention, fitting surface forms several second heat release holes, and cap is towards fitting surface Side forms the bulge loop being bonded in cap and upper housing connection with fitting surface, forms on bulge loop and cooperates with the second heat release hole By the heat transfer in power transformer to it is external, connect to form the third heat release hole of hole with fitting surface；Above-mentioned second heat dissipation Hole and third heat release hole are matched with heat dissipation channel, the heat that transformer body and detection module generate successively are radiated logical Road, the second heat release hole and third heat release hole are gone out out of chamber by the upper guide of power transformer external.

8. power transformer provided by the invention is provided with for preventing children from inserting by five holes between fitting surface and cap Hole touches the protective door of plug assembly；This structure can prevent children from getting electric shock, and prevent dust, foreign matter etc. and fall into plug assembly It is interior.

Detailed description of the invention

It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the explosive view of power transformer provided by the invention；

Fig. 2 is the structural schematic diagram of power transformer provided by the invention；

Fig. 3 is main sectional view shown in Fig. 2；

Fig. 4 is schematic diagram of internal structure shown in Fig. 2；

Fig. 5 is the structural schematic diagram of pedestal shown in Fig. 2；

Description of symbols: 1- pedestal, the first protrusion of 11-, the first heat release hole of 12-, the first screw hole of 13-, 14- support Column, 2- upper housing, 21- fitting surface, 22- barb, 23- indicator light, 24- Outlet line, the first flight of 25-, 211- installation opening, The second heat release hole of 212-, the second screw hole of 213-, 3- cap, five hole jack of 31-, 32- bulge loop, 33- third heat release hole, 4- transformation Device ontology, 5- plug assembly, 51- slot, 52- copper piece component, 53- third screw hole, 6- fixed plate, the second protrusion of 61-, 62- Raised line, 7- detection module, 8- protective door.

Specific embodiment

Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.

As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments It can be combined with each other at conflict.

Embodiment

As shown in Figure 1, a kind of power transformer, including shell；Detection module 7 has in the chamber of the shell Energy automatic identification input voltage and the converting unit for issuing voltage conversion instruction, and the input electricity is judged according to output voltage It presses through and carries out high frequency flicker alarm or the under-voltage judgement alarm unit for carrying out low frequency flicker alarm；Transformer body 4 is set to institute It states in the chamber of shell and is connect with 7 electrical property of detection module or signal, for executing described in the converting unit sending Conversion instruction is to be converted to rated output voltage for the input voltage；In the present embodiment, the input voltage is the electricity The voltage of the power transformer is inputted after source transformer access supply voltage, under normal circumstances, the input voltage is energy The nominal input voltage for working normally the power transformer, i.e., preset input voltage, and the rated output voltage is Preset output voltage；In addition, the present embodiment is to judge the input voltage according to the output voltage of the power transformer With the presence or absence of under-voltage or over-voltage, such case can be by the output voltage as caused by 4 failure of transformer body Variation is included, and is enabled users to timely find the output voltage exception as caused by transformer body 4 and is handled.

Above-mentioned power transformer by the detection module that is connect with the transformer body to the input voltage into Row automatically identifies and judges, and issuing the conversion instruction when recognizing the input voltage and being high voltage makes the transformer Ontology carries out the conversion of high voltage-low-voltage, and issuing the conversion instruction when recognizing the input voltage and being low-voltage makes The transformer body carries out the conversion of low-voltage-high voltage, i.e., can be carried out the power transformer to the input voltage High voltage or low-voltage it is mutual automated intelligent identification and conversion, can be achieved with electric appliance general in this way in domestic external voltage Standard, without using the power transformer of two different switching functions；Also, the detection module can be according to the power supply transformation The output voltage of device judge the input voltage whether over-voltage or under-voltage, issued if over-voltage high frequency flicker alarm, if It is under-voltage, low frequency flicker alarm is issued, such user can intuitively obtain the power supply transformation outside the power transformer The work state information of device, and can timely find whether the input voltage of above-mentioned power transformer is the power supply transformation 4 failure of the nominal input voltage of device standard or the transformer body.

Further, the detection module 7 is the circuit board that 4 side of transformer body is arranged in；It is set on the circuit It is equipped with the relay that can pass through conversion signal automatic switching circuit；The circuit board is passed through using screw and is molded over the circuit board On screw hole, and the flight of support column 14 that is arranged on the pedestal 1 is fixed on the side of the transformer body 4.

Further, as depicted in figs. 1 and 2, the shell includes the pedestal 1 and upper housing 2 being detachably connected, the upper casing Body 2 connect to form the chamber with the pedestal 1, and the transformer body 4 is arranged with the detection module 7 at the chamber bottom Portion；The pedestal 1 is equipped with first heat release hole 12 corresponding with the transformer body 4 and the detection module 7；By the shell Body is arranged to dismountable pedestal 1 and upper housing 2, convenient for installing to components in the chamber, and is installed The pedestal 1 and upper housing 2 are connected afterwards, rapid and convenient；Above-mentioned first heat release hole 12 is in order to the transformer sheet Body 4 and detection module 7 radiate, and prevent overheat in the power transformer.

In addition, first heat release hole 12 includes that round heat release hole is arranged along the pedestal 1 and 2 junction of upper housing and divides Linear type heat release hole of the cloth in 1 bottom of pedestal；1 bottom of pedestal is additionally provided with for anti-skidding non-slip mat.

Further, the pedestal 1 and upper housing 2 are by taking shape in around the pedestal 1 and 2 junction of upper housing Several first screw holes 13 take shape in the upper housing 2 first flight 25 corresponding with first screw hole 13, and pass through First screw hole 13 is fixedly connected with the screw of the first flight 25.

It further, further include the plug assembly 5 for appliance plug grafting for being set to the chamber, the upper housing 2 End face far from the pedestal 1 is the fitting surface 21 for forming installation opening 211, and the plug assembly 5 passes through the first clamping structure It is connected at the installation opening 211；Above-mentioned plug assembly 5 is connected at the installation opening 211 by first clamping structure, It can make operator that the plug assembly 5 is connected to the opening easily connecting from the upper housing 2 with the pedestal 1 At the installation opening 211 of the fitting surface 21；Copper piece component 52 is provided in the plug assembly 5.

It further, as shown in Figure 3 and Figure 4, further include being set to use between the transformer body 4 and the plug assembly 5 The fixed plate 6 of the transformer body 4 and the plug assembly 5 is positioned in linking, the outer rim of the fixed plate 6 passes through the second card Binding structure is connected in the chamber inner wall；Above-mentioned fixed plate 6 is connected in the chamber inner wall by second clamping structure, this The fixed plate 6 is packed on described by kind structure convenient for the opening that operator connect from the upper housing 2 with the pedestal 1 2 inner wall of shell, and can be securely attached on 2 inner wall of upper housing.

Further, the fixed plate 6 is polygonized structure, between the polygonized structure and the inner wall of the upper housing 2 Heat dissipation channel of heat transfer of the formation for generating the transformer body 4 to the chamber top；It is above-mentioned by described solid The heat dissipation channel that fixed board 6 and chamber inner wall are formed can be used to pass to the heat that the transformer body 4 and detection module 7 generate To the top of the chamber, and the conducting wire that can accommodate the transformer body 4 is passed through and is electrically connected with the plug assembly 5.

Further, the pedestal 1 is circle, and the upper housing 2 is the cone knot that bottom opening is adapted to the pedestal 1 Structure；This construction profile is beautiful, compact-sized, it should be noted that this is the preferred embodiment of the present embodiment, in other implementations Also other shapes structure may be selected in example.

Further, second clamping structure includes several barbs 22 for being symmetrically disposed on 2 inner wall of upper housing, and at Type is in the opposite both sides of the fixed plate 6 and is provided with the raised line 62 of the groove being caught in suitable for the barb 22；Above-mentioned second clamping The cooperation for the groove on the barb 22 and fixed plate 6 that structure passes through 2 inner wall of upper housing is firm by the fixed plate 6 The inner wall for snapping fit onto the upper housing 2 in jail, does not fall out, and operate conveniently, only need to be by the fixed plate 6 when installation The groove is directed at the barb 22 and is caught in.

Further, as shown in Figure 3 and Figure 5, the transformer body 4 is connect by first fixed structure with the pedestal 1, The first fixed structure includes taking shape on the pedestal 1, being arranged along the periphery of 4 lower end of transformer body for preventing The first protrusion 11 that the transformer body 4 shakes, and the fixed plate 6 is taken shape in towards 4 upper end of transformer body Side, the second protrusion 61 that the transformer body 4 is further fixed with 11 cooperation of the first protrusion；Above-mentioned transformer body 4 by being located at first protrusion 11 of 4 lower end of transformer body and positioned at described the of 4 upper end of transformer body Two protrusions 61 are firmly fixed in the chamber, will not be shaken the power transformer receives shock；Separately Outside, first protrusion 11 and the second protrusion 61 are formed by several combination of protrusions, the shape and structure that do not fix, as long as energy Realize the positioning to the transformer body 4.

Further, as shown in Fig. 2, being provided with indicator light 23 on the upper housing 2, the indicator light 23 is connected to the electricity Road plate, can show red light in the power transformer output voltage high voltage, and when low-voltage shows blue lamp, in the input Carry out low frequency flicker when under-voltage, when over-voltage carries out high frequency flicker；Above-mentioned indicator light 23 can intuitively reflect the power supply The working condition of transformer, the indicator light 23 show red light when the power transformer carries out low-voltage-high voltage conversion, It carries out showing blue lamp when high voltage-low voltage transition, when the input voltage over-voltage, the indicator light 23 carries out high frequency flicker, When the input voltage is under-voltage, the indicator light 23 carries out low frequency flicker, and user can be intuitive from the state of the indicator light 23 The work state information of the power transformer is solved, can be taken timely measure when or over-voltage under-voltage in the input voltage, The electric appliance damage for avoiding the power transformer from burning out or be electrically connected with the power transformer.In addition, judging the input Under-voltage or the range of over-voltage are ± 10%.

Such as: now the power transformer to be accessed to external supply voltage using domestic electrical equipment external, It is more than -10% when the nominal input voltage is under-voltage assuming that the indicator light 23 shows red light, then the indicator light 23 is in red light Low frequency flicker is carried out under state, when the nominal input voltage over-voltage is more than+10%, then the indicator light 23 is under red light phase Carry out high frequency flicker.

Further, first clamping structure include the junction for taking shape in the fitting surface 21 and the plug assembly 5, And several protrusions being oppositely arranged, and take shape in the position of the relatively described protrusion of the plug assembly 5 and be provided with suitable for described convex Act the slot 51 being caught in；This structure is able to achieve the quick clamping of the docking apparatus Yu the fitting surface 21, facilitates operator Member's installation.

Further, the power transformer further includes the shell that 21 outside of fitting surface is set to by the second fixed structure Lid 3, the cap 3 form and are aligned setting with the installation opening 211, are connected to the general of plug assembly 5 for plug insertion Five hole jacks 31 of electric appliance described in the voltage output after the power transformer conversion；Above-mentioned cap 3 is set to the fitting surface 21 outside can be effectively protected and cover the plug assembly 5 being connected at the installation opening 211, prevent electric shock or Electric leakage.

Specifically, second fixed structure includes that alignment respectively takes shape in the plug assembly 5 and the fitting surface 21 The third screw hole 53 of the plug assembly 5 of junction and the 4th screw hole 213 of the fitting surface 21, take shape in the shell Second flight corresponding with the 4th screw hole 213 of lid 3, and sequentially pass through the third screw hole 53, the 4th screw hole 213 and second flight screw.

Further, the fitting surface 21 forms several second heat release holes 212, and the cap 3 is towards the fitting surface 21 Side form the bulge loop 32 that is bonded with the fitting surface 21 in the cap 3 and the connection of upper housing 2, on the bulge loop 32 It forms and cooperates with second heat release hole 212 by the heat transfer in the power transformer to the external and fitting surface 21 connection shape third heat release holes 33；Above-mentioned second heat release hole 212 and third heat release hole 33 are matched with heat dissipation channel, by the change The heat that depressor ontology 4 and detection module 7 generate is successively through the heat dissipation channel, the second heat release hole 212 and third heat release hole 33 Outside is gone out by the upper guide of the power transformer out of described chamber.

Further, it is additionally provided with the lamp hole of several mountable ornament lamps at the fitting surface 21, connects the decoration of circuit The light of lamp can be cast out from the third heat release hole 33, especially at night, increase the ornamental of the power transformer Property.

Further, it is provided between the fitting surface 21 and the cap 3 for preventing children from passing through five hole jack 31 touch the protective door 8 of the plug assembly 5；This structure can prevent children from getting electric shock, and prevent dust, foreign matter etc. and fall into institute It states in plug assembly 5.

Further, the junction of the pedestal 1 and the upper housing 2 is provided with the Outlet line for accessing supply voltage 24。

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims

1. a kind of power transformer, which is characterized in that including

Shell；

Detection module (7) has energy automatic identification input voltage and issues voltage conversion instruction in the chamber of the shell Converting unit, and judge that the input voltage over-voltage carries out high frequency flicker alarm or under-voltage carry out low frequency according to output voltage Flash the judgement alarm unit of alarm；

Transformer body (4) connect in the chamber of the shell and with the detection module (7) electrical property or signal, is used for The conversion instruction of the converting unit sending is executed so that the input voltage is converted to rated output voltage；

The detection module (7) is circuit board of the setting in the transformer body (4) side；

The shell includes the pedestal (1) and upper housing (2) being detachably connected, and the upper housing (2) connect with the pedestal (1) The chamber is formed, the transformer body (4) and the detection module (7) are arranged in the cavity bottom；The pedestal (1) Equipped with the first heat release hole (12) corresponding with the transformer body (4) and the detection module (7)；

Further include the plug assembly (5) that appliance plug grafting is used in the chamber, the upper housing (2) far from described The end face of pedestal (1) is the fitting surface (21) for forming installation opening (211), and the plug assembly (5) passes through the first clamping structure It is connected at the installation opening (211).

2. power transformer according to claim 1, which is characterized in that further include be set to the transformer body (4) with For being connected the fixed plate (6) for positioning the transformer body (4) and the plug assembly (5) between the plug assembly (5), The outer rim of the fixed plate (6) is connected in the chamber inner wall by the second clamping structure.

3. power transformer according to claim 2, which is characterized in that the fixed plate (6) is polygonized structure, described The heat transfer for generating the transformer body (4) is formed between polygonized structure and the inner wall of the upper housing (2) To the heat dissipation channel on the chamber top.

4. power transformer according to claim 1, which is characterized in that the pedestal (1) is circle, the upper housing (2) conical structure being adapted to for bottom opening with the pedestal (1).

5. power transformer according to claim 2, which is characterized in that second clamping structure includes being symmetrically disposed on Several barbs (22) of upper housing (2) inner wall, and take shape in the fixed plate (6) with respect to both sides and be provided with suitable for institute State the raised line (62) for the groove that barb (22) is caught in.

6. power transformer according to claim 1, which is characterized in that the transformer body (4) is fixed by first Structure is connect with the pedestal (1), and the first fixed structure includes taking shape on the pedestal (1), along the transformer sheet First raised (11) of the periphery setting of body (4) lower end for preventing the transformer body (4) from shaking, and take shape in described solid Fixed board (6) further fixes the change towards the side of the transformer body (4) upper end, with described first raised (11) cooperation The second of depressor ontology (4) is raised (61).

7. power transformer according to claim 1, which is characterized in that be provided with indicator light on the upper housing (2) (23), the indicator light (23) is connected to the circuit board, can be aobvious according to the power transformer high voltage or low-voltage Show that red light issues low frequency flicker or high frequency flicker when perhaps the blue lamp input voltage is under-voltage or over-voltage.

8. power transformer according to claim 1, which is characterized in that first clamping structure is described including taking shape in The junction of fitting surface (21) and the plug assembly (5) and several protrusions being oppositely arranged, and take shape in the plug assembly (5) position of the relatively described protrusion is provided with the slot (51) being caught in suitable for the protrusion.

9. power transformer according to claim 1, which is characterized in that the power transformer further includes solid by second Determine cap (3) of the structure setting on the outside of the fitting surface (21), it is right with the installation opening (211) that the cap (3) forms Neat setting, the plug assembly (5) is connected to for plug insertion will be described in the voltage output after power transformer conversion Five hole jacks (31) of electric appliance.

10. power transformer according to claim 9, which is characterized in that the fitting surface (21) forms several second The side of heat release hole (212), cap (3) towards the fitting surface (21) is formed in the cap (3) and upper housing (2) The bulge loop (32) being bonded when connection with the fitting surface (21), the bulge loop (32) form and second heat release hole (212) Cooperation connect the heat transfer that the transformer body (4) generate to form third heat dissipation to outside, with the fitting surface (21) Hole (33).

11. power transformer according to claim 9, which is characterized in that the fitting surface (21) and the cap (3) it Between be provided with protective door (8) for preventing children from touching by five hole jack (31) plug assembly (5).

12. power transformer according to claim 1, which is characterized in that the pedestal (1) and the upper housing (2) Junction is provided with the Outlet line (24) for accessing supply voltage.