CN208015602U - A kind of universal power supply adaptor - Google Patents

Abstract

The utility model discloses a kind of universal power supply adaptors; it solves during second shell is clamped; second shell is easy to be in direct contact with components such as transformer, inductance, capacitance, control IC; the problem of influencing the connective stability of component; its key points of the technical solution are that including pcb board, pcb board length direction both sides be removably fixed with the first protection board; the length direction of first protection board is parallel to the length direction of pcb board, achievees the purpose that protect component.

Description

A kind of universal power supply adaptor

Technical field

The utility model is related to electronic technology field, more particularly to a kind of universal power supply adaptor.

Background technology

Power supply adaptor is the power supply conversion equipment of a kind of portable electronic equipment and electronic apparatus, is generally had outer The components compositions such as shell, transformer, inductance, capacitance, control IC, pcb board, its operation principle are converted to direct current by exchange input Output.

When making power supply adaptor, transformer, inductance, capacitance, control IC are welded on pcb board.Shell is divided into One shell and the second shell being clamped with first shell.When assembling, first pcb board is placed in first shell, then by second shell It is connected together with first shell.During second shell is clamped, second shell is easy and transformer, inductance, capacitance, control IC etc. Component is in direct contact, and influences the connective stability of component.

Utility model content

The purpose of this utility model is to provide a kind of universal power supply adaptor, has the advantages that protect component.

The above-mentioned technical purpose of the utility model technical scheme is that：A kind of universal power supply is suitable Orchestration, including pcb board, pcb board length direction both sides are removably fixed with the first protection board, first protection board Length direction is parallel to the length direction of pcb board.

By using above-mentioned technical proposal, during assembling power adapter, second shell is first straight with the first protection board Contact, and then the influence to the component for being fixed on pcb board is reduced, ensure the quality of power supply adaptor, improves power adaptation Device produces qualification rate.

The further setting of the utility model, first protection board are fixed with the second protection away from the side of pcb board Plate.

By using above-mentioned technical proposal, the second protection board, the first protection board and pcb board cooperation enclose component Come, component is made preferably to be protected.

The further setting of the utility model, the pcb board are fixed with power interface part, and second protection board contradicts The surface of power interface part.

The further setting of the utility model, power interface part are used for frequent plug wire, and the second protection board makes power supply connect Mouth is not susceptible to loosen, and improves the service life of power supply adaptor.

The further setting of the utility model, first protection board are respectively and fixedly provided with fixed block by the surface of two close end, The surface of the pcb board is equipped with location hole, and the fixed block is fixed in location hole.

By using above-mentioned technical proposal, convenient for being fixed the first protection board in the surface of pcb board, the first protection board Fixing-stable makes the first protection board have preferable protective effect.

The further setting of the utility model, the pcb board are fixed with patch triode, and the surface of the pcb board is parallel If there are three spliced eye, three connecting pins of the patch triode are each attached in spliced eye, and the patch triode is vertical In pcb board, the patch triode is fixed with convex block, the convex block and the first protection board screw connection away from one end of pcb board.

By using above-mentioned technical proposal, patch triode is stably connected on the first protection board, ensure that three pole of patch The stability of pipe connection, connection disassembling is convenient between patch triode and the first protection board.

The further setting of the utility model, the pcb board are provided with switching power circuit, and switching power circuit includes electricity Source input module, voltage stabilizing rectification module, voltage changing module, first switch module, second switch module, output module and feedback mould Block, Power Entry Module connect alternating current, alternating current are input in voltage stabilizing rectification module, alternating current is carried out rectification by voltage stabilizing rectification module And filtering, so that voltage is maintained at a certain solid voltage value output clamp voltage, first switch module be used for voltage stabilizing rectification module into Row sampling, control clamp voltage export stable voltage after voltage changing module, and voltage stabilizing rectification module has auxiliary charging circuit, Second switch module charges for controlling auxiliary charging circuit, and feedback module is coupled to output module.

Preferably, the first switch module includes chip U30B2269B, first resistor, the first capacitance, PC817, described There is chip U30B2269B the ends 1-8, the second switch module to have first end, second end and third end, and described second opens The second end for closing module is coupled to 8 ends of chip U30B2269B, the third end ground connection of the second switch module, voltage stabilizing rectification Module couples are coupled to first resistor in 7 ends of chip U30B2269B, 4 ends of chip U30B2269B, and first resistor is in addition One end is grounded, and 2 ends of chip U30B2269B are coupled to the first end of PC817, and the second end of PC817 is grounded, and the first of PC817 Bridging has the first capacitance between end and second end, is bridged between 6 ends of chip U30B2269B and the third end of second switch module There is second resistance, the first node is equipped between 2 ends of chip U30B2269B and second resistance, first node is coupled with the Two capacitances, the second end ground connection of the second capacitance, 3 ends of chip U30B2269B are coupled to voltage stabilizing rectification module.

Preferably, the second switch module includes NMOS tube, protection diode and 3rd resistor, the grid of NMOS tube It is coupled to 3rd resistor, the other end of 3rd resistor is coupled to 8 ends of chip U30B2269B, the positive coupling of protection diode Be connected between 3rd resistor and the grid of NMOS tube, the cathode of protection diode be coupled to 3rd resistor and NMOS tube grid it Between, the source electrode of the NMOS tube is coupled to voltage stabilizing rectification module, the drain electrode of NMOS tube.

Preferably, the junction between the anode of protection diode and the grid of 3rd resistor and NMOS tube is the second knot Point is coupled with the 4th resistance, the other end ground connection of the 4th resistance between second node and the grid of NMOS tube.

By using above-mentioned technical proposal, when the input voltage of switching power circuit is excessively high, PC817 can shine, in turn PC817 will disconnect, and ensure that the electric current output of output module is stablized.Second switch module is filled for controlling auxiliary charging circuit Electricity makes power supply adaptor soft start.

In conclusion the utility model has the advantages that：

1, power supply adaptor is easy to assembly, and component is not easily susceptible to influence；

2, the first switch module and second switch module of the switching power circuit can preferably protect load.

Generally speaking the utility model, safe to use, service life is long, simple in structure, very useful.

Description of the drawings

Fig. 1 is the structural schematic diagram of the present embodiment；

Fig. 2 is the structural schematic diagram at another visual angle of the present embodiment；

Fig. 3 is the schematic diagram of switching power circuit in the present embodiment.

Reference numeral：1, pcb board；11, location hole；12, spliced eye；2, the first protection board；21, the second protection board；3, electric Source interface part；4, fixed block；5, patch triode；51, convex block；61, Power Entry Module；62, voltage stabilizing rectification module；63, become Die block；64, first switch module；65, second switch module；66, output module；67, feedback module；7, first shell；8, Two shells.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.

A kind of universal power supply adaptor, as depicted in figs. 1 and 2, including pcb board 1,1 length of switching power circuit pcb board Direction both sides are removably fixed with the first protection board 2, and the length direction of the first protection board of switching power circuit 2 is parallel to PCB The length direction of plate 1.One the first protection board of switching power circuit 2 is fixed with the second protection board 21 away from the side of pcb board 1.It opens Powered-down source circuit pcb board 1 is fixed with power interface part 3, and the second protection board of switching power circuit 21 is contradicted in power interface part 3 Surface.The first protection board of switching power circuit 2 is respectively and fixedly provided with fixed block 4, switching power circuit pcb board by the surface of two close end 1 surface is equipped with location hole 11, and switching power circuit fixed block 4 is fixed in location hole 11.Switching power circuit pcb board 1 It is fixed with patch triode 5, the surface of switching power circuit pcb board 1 is parallel to be set there are three spliced eye 12, and switching power circuit pastes Three connecting pins of piece triode 5 are each attached in spliced eye 12, switching power circuit patch triode 5 perpendicular to pcb board 1, Switching power circuit patch triode 5 is fixed with convex block 51, switching power circuit convex block 51 and first away from one end of pcb board 1 2 screw connection of protection board.During assembling power adapter, second shell 8 is first in direct contact with the first protection board 2, in turn The influence to the component for being fixed on pcb board 1 is reduced, ensures the quality of power supply adaptor, it is qualified to improve power supply adaptor production Rate.

As shown in figure 3, the pcb board 1 in Fig. 1 is provided with switching power circuit, switching power circuit includes power input mould Block 61, voltage stabilizing rectification module 62, voltage changing module 63, first switch module 64, second switch module 65, output module 66 and anti- Present module 67.Power Entry Module 61 connects alternating current, and alternating current is input in voltage stabilizing rectification module 62, and voltage stabilizing rectification module 62 will Alternating current carries out rectification and filtering, and voltage is made to be maintained at a certain solid voltage value output clamp voltage.First switch module 64 for pair Voltage stabilizing rectification module 62 is sampled, and when the voltage of voltage stabilizing rectification module 62 is greater than the set value, first switch module 64 makes surely Repoussage flow module 62 disconnects, and plays the role of protecting electrical appliance.Feedback module 67 is coupled to output module 66.Control clamp voltage Stable voltage is exported after voltage changing module 63.Voltage stabilizing rectification module 62 has auxiliary charging circuit, second switch module 65 It charges for controlling auxiliary charging circuit.First switch module 64 includes chip U30B2269B, first resistor R1, first There is the ends 1-8, second switch module 65 to have first end, second end and third by capacitance C1, PC817, chip U30B2269B The second end at end, second switch module 65 is coupled to 8 ends of chip U30B2269B, and the third end of second switch module 65 is grounded, Voltage stabilizing rectification module 62 is coupled to 7 ends of chip U30B2269B, and 4 ends of chip U30B2269B are coupled to first resistor R1, the The other end of one resistance R1 is grounded, and 2 ends of chip U30B2269B are coupled to the first end of PC817, the second termination of PC817 Ground, between the first end and second end of PC817 bridging have the first capacitance C1,6 ends of chip U30B2269B and second switch module Bridging has second resistance R2 between 65 third end, and the first knot is equipped between 2 ends and second resistance R2 of chip U30B2269B Point, the first node are coupled with the second end ground connection of the second capacitance C2, the second capacitance C2.3 ends of chip U30B2269B are coupled to surely Repoussage flow module 62.Second switch module 65 includes NMOS tube Q1, protection diode D1 and 3rd resistor R3, NMOS tube Q1's Grid is coupled to 3rd resistor R3, and the other end of 3rd resistor R3 is coupled to 8 ends of chip U30B2269B, protection diode The anode of D1 is coupled between 3rd resistor R3 and the grid of NMOS tube Q1, and the cathode of protection diode D1 is coupled to 3rd resistor Between R3 and the grid of NMOS tube Q1, the source electrode of NMOS tube Q1 is coupled to voltage stabilizing rectification module 62, the drain electrode of NMOS tube Q1.Protection Junction between the anode and 3rd resistor R3 and the grid of NMOS tube Q1 of diode D1 is the second node, the second node with The 4th resistance R4, the other end ground connection of the 4th resistance R4 are coupled between the grid of NMOS tube Q1.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Claims (9)

1. a kind of universal power supply adaptor, including pcb board (1), which is characterized in that pcb board (1) the length direction both sides are equal It is removably fixed with the first protection board (2), the length direction of first protection board (2) is parallel to the length side of pcb board (1) To.

2. a kind of universal power supply adaptor according to claim 1, which is characterized in that first protection board (2) It is fixed with the second protection board (21) away from the side of pcb board (1).

3. a kind of universal power supply adaptor according to claim 2, which is characterized in that the pcb board (1) is fixed with electricity Source interface part (3), second protection board (21) contradict on the surface of power interface part (3).

4. a kind of universal power supply adaptor according to claim 1, which is characterized in that first protection board (2) It is respectively and fixedly provided with fixed block (4) by the surface of two close end, the surface of the pcb board (1) is equipped with location hole (11), the fixed block (4) it is fixed in location hole (11).

5. a kind of universal power supply adaptor according to claim 1, which is characterized in that the pcb board (1) is fixed with patch Piece triode (5), the surface of the pcb board (1) is parallel to be set there are three spliced eye (12), three of the patch triode (5) Connecting pin is each attached in spliced eye (12), and the patch triode (5) is perpendicular to pcb board (1), the patch triode (5) It is fixed with convex block (51), the convex block (51) and the first protection board (2) screw connection away from one end of pcb board (1).

6. a kind of universal power supply adaptor according to claim 1, which is characterized in that the pcb board (1) is provided with out Powered-down source circuit, switching power circuit include Power Entry Module (61), voltage stabilizing rectification module (62), voltage changing module (63), One switch module (64), second switch module (65), output module (66) and feedback module (67), Power Entry Module (61) Alternating current is connected, alternating current is input in voltage stabilizing rectification module (62), alternating current is carried out rectification and filtering by voltage stabilizing rectification module (62), So that voltage is maintained at a certain solid voltage value output clamp voltage, first switch module (64) be used for voltage stabilizing rectification module (62) into Row sampling, control clamp voltage export stable voltage after voltage changing module (63), and voltage stabilizing rectification module (62) has auxiliary Charging circuit, second switch module (65) charge for controlling auxiliary charging circuit, and feedback module (67) is coupled to output Module (66).

7. a kind of universal power supply adaptor according to claim 6, which is characterized in that the first switch module (64) Including chip U30B2269B, first resistor, the first capacitance, PC817, the chip U30B2269B have the ends 1-8, described second There is switch module (65) first end, second end and third end, the second end of the second switch module (65) to be coupled to core 8 ends of piece U30B2269B, the third end ground connection of the second switch module (65), voltage stabilizing rectification module (62) are coupled to chip 4 ends at 7 ends of U30B2269B, chip U30B2269B are coupled to first resistor, the other end ground connection of first resistor, chip 2 ends of U30B2269B are coupled to the first end of PC817, and the second end of PC817 is grounded, between the first end and second end of PC817 Bridging has the first capacitance, and being bridged between 6 ends and the third end of second switch module (65) of chip U30B2269B has the second electricity Resistance is equipped with the first node between 2 ends of chip U30B2269B and second resistance, first node is coupled with the second capacitance, the The second end of two capacitances is grounded, and 3 ends of chip U30B2269B are coupled to voltage stabilizing rectification module (62).

8. a kind of universal power supply adaptor according to claim 7, which is characterized in that the second switch module (65) Including NMOS tube, protection diode and 3rd resistor, the grid of NMOS tube is coupled to 3rd resistor, and other the one of 3rd resistor End is coupled to 8 ends of chip U30B2269B, and the anode of protection diode is coupled between 3rd resistor and the grid of NMOS tube, The cathode of protection diode is coupled between 3rd resistor and the grid of NMOS tube, and it is whole that the source electrode of the NMOS tube is coupled to voltage stabilizing Flow module (62), the drain electrode of NMOS tube.

9. a kind of universal power supply adaptor according to claim 8, which is characterized in that protection diode anode with Junction between 3rd resistor and the grid of NMOS tube is the second node, coupling between second node and the grid of NMOS tube It is connected to the 4th resistance, the other end ground connection of the 4th resistance.