CN207441391U - A kind of power transformer - Google Patents

Abstract

The utility model discloses a kind of power transformer, including housing；Detection module, in the chamber of housing, with energy automatic identification input voltage and send the converting unit of voltage conversion instruction and judge that input voltage overvoltage carries out high frequency flicker alarm or the under-voltage judgement alarm unit for carrying out low frequency flicker alarm according to output voltage；Transformer body, for performing the conversion instruction that converting unit sends to realize the conversion of voltage in the chamber of housing and with detection module electrically or signal is connected；Above-mentioned power transformer is identified and judged to input voltage by the detection module being connected with transformer body, realize power transformer high voltage and low-voltage it is mutual automated intelligent conversion, can thus make electric appliance general 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 overvoltage, 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 utility model is related to transformer technology fields, and in particular to a kind of power transformer.

Background technology

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, the voltage and external voltage of portable country's electric appliance are there may be difference, if foreign electric appliance directly is 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, including housing, arranged on enclosure interior and the toroidal transformer with input terminal lead and output terminal lead, with it is defeated Enter to hold the plug that lead is electrically connected, the socket, the control switch that are electrically connected with output terminal lead.

However, the prior art cannot still solve in actual use domestic and international electric appliance due to voltage standard difference without Can be general the problem of, the reason is that, the conversion for realization high voltage-low-voltage 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 accurate different, it is high or low, if improper use during artificial selection is using power transformer, it can play and run counter to desire Effect.

Utility model content

Therefore, the purpose of this utility model is to provide a kind of power supply change that can make electric appliance general in domestic and international voltage standard Depressor.

A kind of power transformer, including

Housing；

Detection module, in the chamber of the housing, having automatic identification input voltage and can send voltage conversion and refer to The converting unit of order and according to output voltage judge input voltage overvoltage carry out high frequency flicker alarm or it is under-voltage progress low frequency sudden strain of a muscle The judgement alarm unit of bright alarm；

Transformer body, in the chamber of the housing and with the detection module electrically or signal be connected, for holding The conversion instruction that the row converting unit is sent by the input voltage to be converted to rated output voltage.

Preferably, the detection module is the circuit board for being arranged on the transformer body one side.

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

Preferably, further include the plug assembly for appliance plug grafting arranged on the chamber, the upper shell 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.

Preferably, further include and position the transformation between the transformer body and the plug assembly for being connected The fixed plate of device body and the plug assembly, the outer rim of the fixed plate are connected in by the second clamping structure in the chamber Wall.

Preferably, the fixed plate be polygonized structure, shape between the polygonized structure and the inner wall of the upper shell Into for the heat dissipation channel by the heat transfer that the transformer body generates to the chamber top.

Preferably, the pedestal is circle, and the upper shell 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 shaping With respect to both sides and the raised line for the groove being caught in suitable for the barb is provided in the fixed plate.

Preferably, the transformer body is connected by first fixed structure with the pedestal, the first fixed structure It sets to prevent the transformer body from rocking including taking shape on the pedestal, along the periphery of the transformer body lower end First protrusion and take shape in the fixed plate towards the transformer body upper end one side, with first male cooperation Further fix the second protrusion of the transformer body.

Preferably, indicator light is provided on the upper shell, the indicator light is connected to the circuit board, can be according to defeated Go out voltage height show red light either blue lamp according to input voltage it is under-voltage or over-pressed progress low frequency or high frequency flicker Alarm.

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

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

Preferably, the fitting surface forms several second heat emission holes, the cap towards the one side of the fitting surface into Type has the bulge loop being bonded in the cap and upper shell connection with the fitting surface, is formed and described second on the bulge loop Heat emission hole cooperation by the heat transfer in the power transformer to outside, be connected with the fitting surface and to form the 3rd of hole and dissipate Hot hole.

Preferably, it is provided with to prevent children from passing through five hole jack contact between the fitting surface and the cap To the protection door of the plug assembly.

Preferably, the junction of the pedestal and the upper shell is provided with to access the Outlet line of supply voltage.

Technical solutions of the utility model have the following advantages that：

1. power transformer provided by the utility model, including housing；Detection module in the chamber of housing, has Energy automatic identification input voltage simultaneously sends the converting unit of voltage conversion instruction and judges input voltage mistake according to output voltage Pressure carries out high frequency flicker alarm or the under-voltage judgement alarm unit for carrying out low frequency flicker alarm；Transformer body, arranged on housing In chamber and with detection module electrically or signal be connected, for performing the conversion instruction that converting unit sends with by input voltage turn It is changed to rated output voltage；Above-mentioned power transformer carries out certainly input voltage by the detection module being connected with transformer body Dynamic identification and judgement, when recognize input voltage for high voltage when send conversion instruction make transformer body carry out high voltage- The conversion of low-voltage makes transformer body carry out low-voltage-height when recognizing input voltage to send conversion instruction during low-voltage Power transformer, i.e., can carry out input voltage high voltage by the conversion of voltage or the mutual automated intelligent of low-voltage is known It not and converts, electric appliance general is so can be achieved in domestic and international voltage standard, without using the power supply of two different switching functions Transformer；Also, detection module can judge whether input voltage is over-pressed or under-voltage according to the output voltage of power transformer, if It is over-pressed then send high frequency flicker alarm, sent if under-voltage low frequency flicker alarm, such user just can be outside power transformer Intuitively obtain power transformer work state information, and can timely find above-mentioned power transformer input voltage whether For the nominal input voltage of power transformer standard or transformer body failure.

2. power transformer provided by the utility model, housing includes the pedestal and upper shell that are detachably connected, upper shell It is connected to form chamber with pedestal, transformer body is arranged on cavity bottom with detection module；Upper shell bottom is equipped with and transformer Body and corresponding first heat emission hole of detection module；Housing is arranged to dismountable pedestal and upper shell, convenient for chamber Pedestal is connected with upper shell after interior parts are installed, and installation is complete, rapid and convenient；Above-mentioned first heat emission hole is In order to radiate to transformer body and detection module, overheat in power transformer is prevented.

3. power transformer provided by the utility model, the grafting for appliance plug grafting further included arranged on chamber fills It puts, the end face of the separate pedestal of upper shell is the fitting surface for forming installation opening, and plug assembly is connected by the first clamping structure At installation opening；Above-mentioned plug assembly is connected to by the first clamping structure at installation opening, can make operating personnel will easily from Plug assembly is connected at the installation opening of fitting surface by the opening that upper shell is connected with pedestal.

4. power transformer provided by the utility model further includes and is used to hold in the mouth between transformer body and plug assembly The fixed plate of positioning transformer body and plug assembly is connect, the outer rim of fixed plate is connected in by the second clamping structure in chamber Wall；Above-mentioned fixed plate is connected in chamber inner wall by the second clamping structure, and this structure personnel easy to operation are from upper shell and bottom Fixed plate is packed into the inner wall of upper shell by the opening of seat connection, and can be securely attached on inner wall.

5. power transformer provided by the utility model, transformer body is connected by first fixed structure with pedestal, the One fixed structure includes taking shape on pedestal, sets what is rocked for preventing transformer body along the periphery of transformer body lower end First protrusion and take shape in fixed plate towards transformer body upper end one side, with the first male cooperation further fix transformation Second protrusion of device body；Above-mentioned transformer body is by being located at the first protrusion of transformer body lower end and positioned at transformer sheet Second protrusion of body upper end is firmly fixed in chamber, even if power transformer receives shock and will not shake.

6. power transformer provided by the utility model, power transformer is further included is arranged at dress by the second fixed structure With the cap on the outside of face, cap forms setting of aliging with installation opening, is connected to plug assembly for plug insertion and becomes power supply Five hole jacks of the transformed voltage output electric appliance of depressor；Above-mentioned cap is arranged at the outside of fitting surface, can be effectively protected and The plug assembly being connected at installation opening is covered, prevents from getting an electric shock or leak electricity.

7. power transformer provided by the utility model, fitting surface forms several second heat emission holes, cap direction assembling The one side in face forms the bulge loop being bonded in cap and upper shell connection with fitting surface, is formed and the second heat emission hole on bulge loop Cooperation by the heat transfer in power transformer to outside, be connected to form the 3rd heat emission hole of hole with fitting surface；Above-mentioned second Heat emission hole and the 3rd heat emission hole are engaged with heat dissipation channel, and the heat that transformer body and detection module are generated is successively through heat dissipation Passage, the second heat emission hole and the 3rd heat emission hole go out outside out of chamber by the upper guide of power transformer.

8. power transformer provided by the utility model is provided with to prevent children by five between fitting surface and cap Hole jack contact is to the protection door of plug assembly；This structure can prevent children from getting electric shock and prevent dust, foreign matter etc. from falling into grafting In device.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other attached drawings are can also be obtained according to these attached drawings.

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

Fig. 2 is the structure diagram of power transformer provided by the utility model；

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

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

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

Reference sign：1- pedestals, the first protrusions of 11-, the first heat emission holes of 12-, the first screw holes of 13-, 14- supports Column, 2- upper shells, 21- fitting surfaces, 22- barbs, 23- indicator lights, 24- Outlet lines, the first flights of 25-, 211- installation openings, The second heat emission holes of 212-, the second screw holes of 213-, 3- caps, five hole jacks of 31-, 32- bulge loops, the 3rd heat emission holes of 33-, 4- transformations Device body, 5- plug assemblies, 51- slots, 52- copper piece components, the 3rd screw holes of 53-, 6- fixed plates, the second protrusions of 61-, 62- Raised line, 7- detection modules, 8- protection doors.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality Novel protected scope.

, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the One ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition Concrete meaning of the language in the utility model.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not forming conflict can be combined with each other.

Embodiment

As shown in Figure 1, a kind of power transformer, including housing；Detection module 7 in the chamber of the housing, has Energy automatic identification input voltage simultaneously sends the converting unit of voltage conversion instruction and judges the input electricity 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, arranged on institute State in the chamber of housing and with the detection module 7 electrically or signal is connected, for performing described in the converting unit sends Conversion instruction by the input voltage to be converted to rated output voltage；In the present embodiment, the input voltage is the electricity The voltage of the power transformer is inputted after the transformer access supply voltage of source, under normal circumstances, the input voltage is energy Make the nominal input voltage of the power transformer normal work, i.e., default input voltage, and the rated output voltage is Default output voltage；In addition, the present embodiment is that the input voltage is judged according to the output voltage of the power transformer With the presence or absence of under-voltage or over-pressed, such case can will be due to the output voltage caused by 4 failure of transformer body Variation is included, and enables users to timely find due to the output voltage exception caused by transformer body 4 and handle.

Above-mentioned power transformer by the detection module that is connected with the transformer body to the input voltage into Row automatically identification and judgement, makes the transformer when recognizing the input voltage to send the conversion instruction during high voltage Body carries out the conversion of high voltage-low-voltage, makes when recognizing the input voltage to send the conversion instruction during low-voltage The transformer body carries out the conversion of low-voltage-high voltage, i.e., can carry out the power transformer to the input voltage High voltage or low-voltage it is mutual automated intelligent identification and conversion, so can be achieved with electric appliance general 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 judges whether the input voltage is over-pressed or under-voltage, and high frequency flicker alarm is sent if overvoltage, if It is under-voltage, low frequency flicker alarm is sent, such user just 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 for being arranged on 4 one side of transformer body；It is set on the circuit Being equipped with can be by the relay of 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 the support column 14 being arranged on the pedestal 1 be fixed on the one side of the transformer body 4.

Further, as depicted in figs. 1 and 2, the housing includes the pedestal 1 being detachably connected and upper shell 2, the upper casing Body 2 is connected to form the chamber with the pedestal 1, and the transformer body 4 is arranged on the chamber bottom with the detection module 7 Portion；The pedestal 1 is equipped with and 7 corresponding first heat emission hole 12 of the transformer body 4 and the detection module；By the shell Body is arranged to dismountable pedestal 1 and upper shell 2, and convenient for being installed to parts in the chamber, and installation is complete The pedestal 1 and upper shell 2 are connected afterwards, rapid and convenient；Above-mentioned first heat emission 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 emission hole 12 includes setting round heat emission hole along the pedestal 1 and 2 junction of upper shell and divide Cloth is in the linear pattern heat emission hole of 1 bottom of pedestal；1 bottom of pedestal is additionally provided with for anti-skidding non-slip mat.

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

Further, the plug assembly 5 for appliance plug grafting arranged on the chamber is further included, the upper shell 2 End face away 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 to by first clamping structure at the installation opening 211, It can make operating personnel that will easily be connected to the plug assembly 5 from the upper shell 2 with the opening that the pedestal 1 is connected At the installation opening 211 of the fitting surface 21；Copper piece component 52 is provided in the plug assembly 5.

Further, as shown in Figure 3 and Figure 4, further include and used 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 personnel easy to operation from the upper shell 2 with the opening that the pedestal 1 is connected 2 inner wall of housing, and can be securely attached on 2 inner wall of upper shell.

Further, the fixed plate 6 is polygonized structure, between the polygonized structure and the inner wall of the upper shell 2 It is formed for the heat dissipation channel by the heat transfer that the transformer body 4 generates 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 shell 2 is tied for the cone that bottom opening is adapted to the pedestal 1 Structure；This construction profile is beautiful, compact-sized, it is necessary to which explanation, 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 include be symmetrically disposed on 2 inner wall of upper shell several barbs 22 and into Type with respect to both sides and is provided with the raised line 62 for the groove being caught in suitable for the barb 22 in the fixed plate 6；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 shell is firm by the fixed plate 6 The inner wall for snapping fit onto the upper shell 2 in jail, does not fall out, and operate facility, only need to be by the fixed plate 6 during 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 connected by first fixed structure with the pedestal 1, The first fixed structure includes taking shape on the pedestal 1, sets to prevent along the periphery of 4 lower end of transformer body The first protrusion 11 and take shape in the fixed plate 6 towards 4 upper end of transformer body that the transformer body 4 rocks One side, the second protrusion 61 that the transformer body 4 is further fixed with 11 cooperation of the described first protrusion；Above-mentioned transformer body 4 by be located at first protrusion 11 of 4 lower end of transformer body and positioned at 4 upper end of transformer body described the Two protrusions 61 are firmly fixed in the chamber, even if the power transformer receives shock and will not shake；Separately Outside, first protrusion 11 and the second protrusion 61 are formed by several combination of protrusions, without fixed shape and structure, 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 shell 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 Low frequency flicker is carried out during under-voltage, high frequency flicker is carried out when over-pressed；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 during high voltage-low voltage transition, when input voltage overvoltage, 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 directly perceived from the state of the indicator light 23 The work state information of the power transformer is solved, can in time be taken measures when the input voltage is under-voltage or over-pressed, The electric appliance damage that the power transformer is avoided to burn out or be electrically connected with the power transformer.In addition, judge the input Under-voltage or the scope of overvoltage are ± 10%.

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

Further, first clamping structure include take shape in the fitting surface 21 and the plug assembly 5 junction, And it several protrusions for being oppositely arranged and takes shape in the position of the relatively described protrusion of the plug assembly 5 and is provided with suitable for described convex Act the slot 51 being caught in；This structure can realize the quick clamping of the docking apparatus and the fitting surface 21, be conveniently operated people Member's installation.

Further, the power transformer further includes the shell that 21 outside of fitting surface is arranged at by the second fixed structure Lid 3, the cap 3 form setting of aliging 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 transformed voltage output of power transformer；Above-mentioned cap 3 is arranged at the fitting surface 21 outside can be effectively protected and cover the plug assembly 5 being connected at the installation opening 211, prevent get an electric shock or Electric leakage.

Specifically, second fixed structure, which includes alignment respectively, takes shape in the plug assembly 5 and the fitting surface 21 The 3rd 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 Lid 3 and 213 corresponding second flight of the 4th screw hole and sequentially pass through the 3rd screw hole 53, the 4th screw hole 213 and second flight screw.

Further, the fitting surface 21 forms several second heat emission holes 212, and the cap 3 is towards the fitting surface 21 One side form the bulge loop 32 that is bonded with the fitting surface 21 in the cap 3 and the connection of upper shell 2, on the bulge loop 32 It forms and coordinates with second heat emission hole 212 by the heat transfer in the power transformer to the external and fitting surface 21 connection the 3rd heat emission holes 33 of shape；Above-mentioned second heat emission hole, 212 and the 3rd heat emission hole 33 is engaged with heat dissipation channel, by the change The heat that depressor body 4 and detection module 7 generate is successively through the heat dissipation channel, the second heat emission hole 212 and the 3rd heat emission hole 33 Outside is gone out by the upper guide of the power transformer out of described chamber.

Further, several lamp holes for installing ornament lamp are additionally provided at the fitting surface 21, connect the decoration of circuit The light of lamp can be cast out from the 3rd heat emission hole 33, particularly at night, add the ornamental of the power transformer Property.

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

Further, the junction of the pedestal 1 and the upper shell 2 is provided with to access the Outlet line of supply voltage 24。

Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to 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 the obvious variation thus extended out or Among changing still in the protection domain of the invention.

Claims (15)

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

Housing；

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

Transformer body (4), in the chamber of the housing and with the detection module (7) electrically or signal be connected, be used for The conversion instruction that the converting unit sends is performed so that the input voltage is converted to rated output voltage.

2. power transformer according to claim 1, which is characterized in that the detection module (7) is to be arranged on the change The circuit board of depressor body (4) one side.

3. power transformer according to claim 1 or 2, which is characterized in that the housing includes the bottom being detachably connected Seat (1) and upper shell (2), the upper shell (2) are connected to form the chamber with the pedestal (1), the transformer body (4) The cavity bottom is arranged on the detection module (7)；The pedestal (1) is equipped with and the transformer body (4) and described Corresponding first heat emission hole (12) of detection module (7).

4. power transformer according to claim 3, which is characterized in that further include and inserted in the chamber for electric appliance The plug assembly (5) of head grafting, the end face away from the pedestal (1) of the upper shell (2) are to form installation opening (211) Fitting surface (21), the plug assembly (5) are connected to by the first clamping structure at the installation opening (211).

5. power transformer according to claim 4, which is characterized in that further include arranged on the transformer body (4) with The transformer body (4) and the fixed plate (6) of the plug assembly (5) are positioned for being connected 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.

6. power transformer according to claim 5, 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 the inner wall of polygonized structure and the upper shell (2) To the heat dissipation channel on the chamber top.

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

8. power transformer according to claim 3, which is characterized in that the pedestal (1) is circular, the upper shell (2) conical structure being adapted to for bottom opening with the pedestal (1).

9. power transformer according to claim 5, which is characterized in that the transformer body (4) is fixed by first Structure is connected with the pedestal (1), and the first fixed structure includes taking shape on the pedestal (1), along the transformer sheet The periphery of body (4) lower end sets prevent the transformer body (4) from rocking first raised (11) and takes shape in described solid Fixed board (6) further fixes the change towards the one side of the transformer body (4) upper end, with described first raised (11) cooperation The second of depressor body (4) is raised (61).

10. power transformer according to claim 3, which is characterized in that be provided with indicator light on the upper shell (2) (23), the indicator light (23) is connected to the detection module (7), can be according to the power transformer high voltage or low electricity Pressure shows that red light sends low frequency flicker or high frequency flicker when either the blue lamp input voltage is under-voltage or over-pressed.

11. power transformer according to claim 4, which is characterized in that first clamping structure includes taking shape in institute Several protrusions for stating the junction of fitting surface (21) and the plug assembly (5) and being oppositely arranged and take shape in the grafting dress The position for putting (5) relatively described protrusion is provided with the slot (51) being caught in suitable for the protrusion.

12. power transformer according to claim 4, which is characterized in that the power transformer is further included by second Fixed structure is arranged at the cap (3) on the outside of the fitting surface (21), and the cap (3) forms and the installation opening (211) Alignment sets, is connected to the plug assembly (5) by the transformed voltage output institute of the power transformer for plug insertion State five hole jacks (31) of electric appliance.

13. power transformer according to claim 12, which is characterized in that the fitting surface (21) forms several second Heat emission hole (212), the one side of cap (3) towards the fitting surface (21) are formed in the cap (3) and upper shell (2) The bulge loop (32) being bonded during connection with the fitting surface (21), the bulge loop (32) form and second heat emission hole (212) The heat transfer that the transformer body (4) generates is connected the 3rd heat dissipation of formation by cooperation to outside, with the fitting surface (21) Hole (33).

14. power transformer according to claim 12, which is characterized in that the fitting surface (21) and the cap (3) Between be provided with the protection door (8) for preventing children from touching the plug assembly (5) by five hole jack (31).

15. power transformer according to claim 3, which is characterized in that the pedestal (1) and the upper shell (2) Junction is provided with to access the Outlet line (24) of supply voltage.